Fertility studies of pasture soils in the wet tropical coast of Queensland. 4. Soils derived from metamorphic rocks

1972 ◽  
Vol 12 (56) ◽  
pp. 281 ◽  
Author(s):  
JK Teitzel ◽  
RC Bruce
Keyword(s):  
Plant Growth ◽  
Phosphorus Deficiency ◽  
Aluminium Toxicity ◽  
Calcium Deficiency ◽  
Metamorphic Rocks ◽  
Calcium Treatment ◽  
Fertility Status ◽  
Tropical Coast

Results of fifteen investigations into the fertility status of soils derived from metamorphic rocks in the wet tropical coast of Queensland are presented. Phosphorus deficiency is general. Molybdenum and potassium deficiencies are also widespread. Significant plant growth increases in seven of the nine general nutritional experiments were brought about by the calcium treatment. However, the involvement of additional calcium in molybdenum release and in alleviating aluminium toxicity appears more important than in correcting a calcium deficiency. There were also some positive responses to sulphur and negative ones to copper.

Fertility studies of pasture soils in the wet tropical coast of Queensland. 3. Basaltic soils

1972 ◽  
Vol 12 (54) ◽  
pp. 49 ◽  
Author(s):  
JK Teitzel ◽  
RC Bruce
Keyword(s):  
Plant Growth ◽  
Soil Nitrogen ◽  
Phosphorus Deficiency ◽  
Growth Responses ◽  
Nitrogen Status ◽  
Fertility Status ◽  
High Soil ◽  
Basaltic Soils ◽  
Tropical Coast

Results of thirteen investigations into the fertility status of fifteen basaltic soils in the wet tropical coast of Queensland are presented. Although farming experience has shown these soils to be among the most fertile in the area, a widespread phosphorus deficiency is recorded. Plant growth responses to molybdenum, sulphur and calcium also occurred. The molybdenum deficiency appears to be particularly important in older , pastures where the initailly high soil nitrogen status has been depleted.

Fertility studies of pasture soils in the wet tropical coast of Queensland. 6. Soils derived from beach sand

1973 ◽  
Vol 13 (62) ◽  
pp. 312 ◽  
Author(s):  
JK Teitzel ◽  
RC Bruce
Keyword(s):  
Plant Growth ◽  
Phosphorus Deficiency ◽  
Fertilizer Application ◽  
Potassium Deficiency ◽  
Beach Sand ◽  
Chemical Analyses ◽  
Calcium Treatment ◽  
Growth Studies ◽  
Tropical Coast

Plant growth studies and chemical analyses revealed severe and widespread deficiencies of phosphorus and copper, but in the case of phosphorus, deficiency is easily changed to toxicity by heavy fertilizer application. Potassium deficiency is less severe but fairly widespread. Calcium treatment functioned in different ways and produced both positive and negative responses. Other deficiencies recorded include zinc, molybdenum, sulphur, and boron.

Fertility studies of pasture soils in the wet tropical coast of Queensland. 5. Mixed alluvial soils

1973 ◽  
Vol 13 (62) ◽  
pp. 306 ◽  
Author(s):  
JK Teitzel ◽  
RC Bruce
Keyword(s):  
Plant Growth ◽  
Nutritional Status ◽  
Phosphorus Deficiency ◽  
Alluvial Soils ◽  
Growth Responses ◽  
Wet Tropics ◽  
Growth Experiments ◽  
Tropical Coast

Results of sixteen plant growth experiments examining the nutritional status of mixed alluvial soils in the wet tropics are presented. A phosphorus deficiency is widespread and, in certain situations, extreme. Significant plant growth responses to calcium, copper, molybdenum, calcium + sulphur, magnesium + sulphur, and molybdenum + sulphur + manganese treatments were also recorded.

scholarly journals Farmers’ Perceptions about the Effect of Farm Land Management Practices and Soil Depth on the Distribution of Major Soil Physico-Chemical Properties in Eroded Soils of Aboy Gara Watershed, Gidan District, North Wollo Zone

2018 ◽  
Vol 2 (2) ◽  
pp. 186-195
Author(s):  
Gebeyaw Tilahun Yeshaneh
Keyword(s):  
Plant Growth ◽  
Soil Fertility ◽  
Land Management ◽  
Management Practices ◽  
Soil Depth ◽  
Chemical Properties ◽  
Soil Drainage ◽  
Fertility Status ◽  
Physico Chemical ◽  
Black Color

The study was conducted at the Abuhoy Gara Catchment, which is located in the Gidan District of North Wello Zone. The aim of the study was to study farmers’ perceptions about the effect of farm land management practices and soil depth on the distribution of major soil physico-chemical properties in eroded soils of Aboy Gara watershed. To address this issue, semi-structured interviews were conducted in 64 households to gain insight into soil fertility management practices, local methods were used to assess the fertility status of a field, and perceived trends in soil fertility. Thirty-three farmers were then asked to identify fertile and infertile fields. According to farmers response, farmers’ fields were characterized as fertile where it comprise black color, cracks during dry season, good crop performance, vigorous growth of certain plants and presence of plants in a dry environment whereas the infertile is where it shows yellow/white and red colors, compacted soils, stunted plant growth, presence of rocks and stones and wilting or dying of crops in a hot environment. A total of eight indicators (soil color, texture, soil depth, topography, soil drainage, and distance from home, type of weeds grown and cultivation intensity) were found to be used by farmers to evaluate and monitor soil fertility. The results of administered questions showed that the principal indicators mentioned by farmers as very important were soil colour (82.8%), continuous cropping land (72.2%), soil texture (62.8%), distance from home (61%), type of weeds grown (56%), soil depth (55.6%), topography (51.1%), and soil drainage (28.7%) as very important. So, among sixty four interviewed farmers: deep soil (60 farmers), soils near to home (60 farmers), forest soil (59 farmers), smooth fine soil (59 farmers), black color soil (58 farmers) and gentle slope soil (57farmers) are categorized as fertile whereas 59, 57, 56, 55, and 44farmers said that Sandy/coarse soil, shallow soil depth, steep slope soils and yellow/white, red soils and continuously cultivated soils are infertile, respectively. The overall result showed that there was good agreement between farmers’ assessment of the soil fertility status of a field and a number of these indicators. The soil laboratory analysis also corresponded well with farmers’ assessment of soil fertility. Therefore, to design more appropriate research and to facilitate clear communication with farmers, researchers need to recognize farmers’ knowledge, perceptions about assessments of soil fertility. Because, as they included all soil factors affecting plant growth, farmers’ perceptions of soil fertility were found to be more long term day-to-day close practical experience finding than those of researchers.

Fertility studies of pasture soils in the wet tropical coast of Queensland. 2. Granitic soils

1971 ◽  
Vol 11 (48) ◽  
pp. 77 ◽  
Author(s):  
JK Teitzel ◽  
RC Bruce
Keyword(s):  
Fertility Status ◽  
Copper Zinc ◽  
Tropical Coast

Results of investigations into the fertility status of granitic soils in the wet tropical coast of Queensland are presented. The previously recognised infertility of these soils is confirmed with the recording of phosphorus, copper, zinc, potassium, sulphur, and calcium deficiencies. Phosphorus is the most important deficiency. If this element is not applied, permanent pastures cannot be established. Copper, potassium, and zinc deficiencies are also very widespread.

Organic acid exudation induced by phosphorus deficiency and/or aluminium toxicity in two contrasting soybean genotypes

2004 ◽  
Vol 122 (2) ◽  
pp. 190-199 ◽  
Author(s):  
Dengfeng Dong ◽  
Xinxiang Peng ◽  
Xiaolong Yan
Keyword(s):  
Organic Acid ◽  
Phosphorus Deficiency ◽  
Aluminium Toxicity ◽  
Soybean Genotypes ◽  
Organic Acid Exudation

Phosphorus and zinc fertilization in fodder cowpea -A review

2015 ◽  
Vol 36 (4) ◽  
Author(s):  
Deepak Kumar Rathore ◽  
Rakesh Kumar ◽  
Magan Singh ◽  
V. K. Meena ◽  
Uttam Kumar ◽  
...  
Keyword(s):  
Plant Growth ◽  
Vigna Unguiculata ◽  
Root Development ◽  
Phosphorus Deficiency ◽  
Significant Response ◽  
Optimum Dose ◽  
Npk Fertilizers ◽  
Zinc Fertilization ◽  
Zinc Nutrition

Phosphorus is a key nutrient for increasing productivity of legumes. It is required for plant growth and root development. Phosphorus deficiency in soil is widespread and crops grown under deficient situation show significant response to fertilizer phosphorus. At several places normal yield of crops could not be achieved despite judicious use of NPK fertilizers due to deficiency of micronutrients in soil, in general, that of Zn in particular. The knowledge regarding the use of optimum dose of nutrients especially Phosphorus and Zinc is of serious concern. The literature about the performance of fodder cowpea (<italic>Vigna unguiculata</italic>) in relation to phosphorus and zinc nutrition is reviewed in this paper.

scholarly journals Effect of aluminium on plant growth and metabolism.

2001 ◽  
Vol 48 (3) ◽  
pp. 673-686 ◽  
Author(s):  
T Mossor-Pietraszewska
Keyword(s):  
Plant Growth ◽  
Acid Soils ◽  
Root Apex ◽  
Aluminium Toxicity ◽  
Donor Ligands ◽  
Al Tolerance ◽  
Root Cells ◽  
Oxygen Donor ◽  
Major Factors ◽  
Division Cell

Aluminium toxicity is one of the major factors that limit plant growth and development in many acid soils. Root cells plasma membrane, particularly of the root apex, seems to be a major target of Al toxicity. However, strong interaction of Al3+, the main Al toxic form, with oxygen donor ligands (proteins, nucleic acids, polysaccharides) results in the inhibition of cell division, cell extension, and transport. Although the identification of Al tolerance genes is under way, the mechanism of their expression remains obscure.

The source of nitrogen (NH4+ or NO3–) affects the concentration of oxalate in the shoots and the growth of Atriplex nummularia (oldman saltbush)

2013 ◽  
Vol 40 (10) ◽  
pp. 1057 ◽  
Author(s):  
Hussein Al Daini ◽  
Hayley C. Norman ◽  
Paul Young ◽  
Edward G. Barrett-Lennard
Keyword(s):  
Plant Growth ◽  
Nutritive Value ◽  
Field Survey ◽  
Farming Systems ◽  
Dry Mass ◽  
Calcium Deficiency ◽  
Oxalate Concentration ◽  
N Source ◽  
Atriplex Nummularia ◽  
High Concentrations

Atriplex nummularia Lindl. (oldman saltbush) is a halophytic shrub used widely as a forage for ruminant production in saline farming systems. However, it can contain high concentrations of oxalate in the leaves, which may cause calcium deficiency in grazing animals. We hypothesised that supplying NH4+ instead of NO3– to a clone of this species would decrease oxalate concentrations in the shoots, and also decrease plant growth. Oxalate concentrations were measured in plants in the field, and a glasshouse experiment was conducted in which plants were grown with 10 mM NO3– or NH4+, with 50, 200 or 500 mM NaCl. The field survey showed effects of site (P < 0.001), with average oxalate concentrations in shoots varying between 2.4 and 6.4% dry mass (DM). In the glasshouse, oxalate concentrations and plant growth were both affected by N-source and salinity (P < 0.001). Averaged across salinities, plants grown with NH4+ for 24 days had only 43% of the shoot DM but 25% of the oxalate concentration of plants grown with NO3–. We discuss the effects of N-source on oxalate concentrations, the implications of this for halophyte growth, and the opportunity to select halophytes with lower oxalate and higher nutritive value for livestock.

Aeluropus littoralis maintains adequate gas exchange, pigment composition and phenolic contents under combined effects of salinity and phosphorus deficiency

2017 ◽  
Vol 65 (5) ◽  
pp. 453 ◽  
Author(s):  
Ons Talbi Zribi ◽  
Kamel Hessini ◽  
Najla Trabelsi ◽  
Fethia Zribi ◽  
Abdelwahed Hamdi ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Plant Growth ◽  
Radical Scavenging Activity ◽  
Phosphorus Deficiency ◽  
Radical Scavenging ◽  
Photosynthetic Apparatus ◽  
Interactive Effects ◽  
P Availability ◽  
Aeluropus Littoralis ◽  
P Deficiency

Salinity and phosphorus (P) deficiency are important environmental factors that decrease plant growth and productivity throughout the world. These two stresses frequently coexist in calcareous salt-affected soils. To better understand how plants adapt to these combined stresses, we investigated the interactive effects of salinity and P availability on photosynthetic activity, leaf pigment, phenolic compounds content and antioxidant activity in Aeluropus littoralis (Gouan)Parl., a promising C4 monocotyledonous halophyte that usually grows in dry salty areas or marshes. Plants were grown hydroponically under low or sufficient P supply (5 or 180 µM KH2PO4 respectively), with or without 400 mM NaCl. When individually applied, salinity and P deficiency stresses significantly restricted shoot and root relative growth rate, with a more marked effect of the former stress. However, the effects of the two stresses combined were non-additive on plant growth. Our results showed that salinity and P deficiency stresses applied individually or combined have no significant effect on CO2 assimilation rate, instantaneous water-use efficiency (WUEi), and leaf malondialdehyde content. Chlorophyll, carotoneoids, anthocyanins and phenolics content increased significantly under both P shortage and salt stresses applied individually or combined. Furthermore, a strong correlation was found between both total antioxidant capacity and DPPH (1,1-diphenyl-2-picrylhydrazyl) radical scavenging activity and shoot phenolics and carotenoids contents. These results suggest that the ability of A. littoralis to cope with both P deficiency and high salt stresses is a result of several mechanisms mainly involved in the conservation of the integrity of the photosynthetic apparatus. Secondary metabolites – mainly phenolic compounds and carotenoids – play an important role in the protection of A. littoralis plants against oxidative damage under combined high salinity and P deficiency stresses.

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